<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
          <template #prefix></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off" placeholder="密码" @keyup.enter="handleLogin">
          <template #prefix></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter="handleLogin">
          <template #prefix></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </el-form-item>
      <el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 0px 0px;">记住密码</el-checkbox>
        <div class="url">
          <a href="javascript:;">忘记密码</a>
          <a href="javascript:;">免费注册</a>
        </div>
      </el-form-item>
      <el-form-item style="width:100%;">
        <el-button :loading="loading" size="large" type="primary" style="width:100%;" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
  </div>
</template>

<script setup lang="ts">
import { getCodeImg, getTenantList } from '@/api/login';
import { authBinding } from '@/api/system/social/auth';
import { useUserStore } from '@/store/modules/user';
import { LoginData, TenantVO } from '@/api/types';
import { to } from 'await-to-js';
import { HttpStatus } from "@/enums/RespEnum";

const userStore = useUserStore();
const router = useRouter();

const loginForm = ref<LoginData>({
  tenantId: '000000',
  username: 'admin',
  password: 'admin123',
  rememberMe: false,
  code: '',
  uuid: ''
} as LoginData);

const loginRules: ElFormRules = {
  tenantId: [{ required: true, trigger: "blur", message: "请输入您的租户编号" }],
  username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
  password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
  code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
};

const codeUrl = ref('');
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 租户开关
const tenantEnabled = ref(true);


// 注册开关
const register = ref(false);
const redirect = ref(undefined);
const loginRef = ref<ElFormInstance>();
// 租户列表
const tenantList = ref<TenantVO[]>([]);

watch(() => router.currentRoute.value, (newRoute: any) => {
  redirect.value = newRoute.query && newRoute.query.redirect;
}, { immediate: true });

const handleLogin = () => {
  loginRef.value?.validate(async (valid: boolean, fields: any) => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 localStorage 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        localStorage.setItem("tenantId", String(loginForm.value.tenantId));
        localStorage.setItem('username', String(loginForm.value.username));
        localStorage.setItem('password', String(loginForm.value.password));
        localStorage.setItem('rememberMe', String(loginForm.value.rememberMe));
      } else {
        // 否则移除
        localStorage.removeItem("tenantId");
        localStorage.removeItem('username');
        localStorage.removeItem('password');
        localStorage.removeItem('rememberMe');
      }
      // 调用action的登录方法
      const [err] = await to(userStore.login(loginForm.value));
      if (!err) {
        await router.push({ path: redirect.value || '/home' });
        loading.value = false;
      } else {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          await getCode();
        }
      }
    } else {
      console.log('error submit!', fields);
    }
  });
};

/**
 * 获取验证码
 */
const getCode = async () => {
  const res = await getCodeImg();
  const { data } = res;
  captchaEnabled.value = data.captchaEnabled === undefined ? true : data.captchaEnabled;
  if (captchaEnabled.value) {
    codeUrl.value = 'data:image/gif;base64,' + data.img;
    loginForm.value.uuid = data.uuid;
  }
};

const getLoginData = () => {
  const tenantId = localStorage.getItem("tenantId");
  const username = localStorage.getItem('username');
  const password = localStorage.getItem('password');
  const rememberMe = localStorage.getItem('rememberMe');
  loginForm.value = {
    tenantId: tenantId === null ? String(loginForm.value.tenantId) : tenantId,
    username: username === null ? String(loginForm.value.username) : username,
    password: password === null ? String(loginForm.value.password) : String(password),
    rememberMe: rememberMe === null ? false : Boolean(rememberMe)
  } as LoginData;
}


/**
 * 获取租户列表
 */
const initTenantList = async () => {
  const { data } = await getTenantList();
  tenantEnabled.value = data.tenantEnabled === undefined ? true : data.tenantEnabled;
  if (tenantEnabled.value) {
    tenantList.value = data.voList;
    if (tenantList.value != null && tenantList.value.length !== 0) {
      loginForm.value.tenantId = tenantList.value[0].tenantId;
    }
  }
}

//检测租户选择框的变化
watch(() => loginForm.value.tenantId, () => {
  localStorage.setItem("tenantId", String(loginForm.value.tenantId))
});

/**
 * 第三方登录
 * @param type
 */
const doSocialLogin = (type: string) => {
  authBinding(type).then((res: any) => {
    if (res.code === HttpStatus.SUCCESS) {
      // 获取授权地址跳转
      window.location.href = res.data;
    } else {
      ElMessage.error(res.msg);
    }
  });
};



onMounted(() => {
  getCode();
  initTenantList();
  getLoginData();
});
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-color: #004d8c;
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;

    input {
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial, serif;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}

// 账号容器
.account-box {
  .toggle {
    padding: 15px 40px;
    text-align: right;
    a {
      color: #27ba9b;
      i {
        font-size: 14px;
      }
    }
  }
  .form {
    padding: 0 20px;
    &-item {
      margin-bottom: 28px;
      .input {
        position: relative;
        height: 36px;
        > i {
          width: 34px;
          height: 34px;
          background: #cfcdcd;
          color: #fff;
          position: absolute;
          left: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 18px;
        }
        input {
          padding-left: 44px;
          border: 1px solid #cfcdcd;
          height: 36px;
          line-height: 36px;
          width: 100%;
          &.error {
            border-color: #cf4444;
          }
          &.active,
          &:focus {
            border-color: #27ba9b;
          }
        }
        .code {
          position: absolute;
          right: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 14px;
          background: #f5f5f5;
          color: #666;
          width: 90px;
          height: 34px;
          cursor: pointer;
        }
      }
      > .error {
        position: absolute;
        font-size: 12px;
        line-height: 28px;
        color: #cf4444;
        i {
          font-size: 14px;
          margin-right: 2px;
        }
      }
    }
    .agree {
      a {
        color: #069;
      }
    }
    .btn {
      display: block;
      width: 100%;
      height: 40px;
      color: #fff;
      text-align: center;
      line-height: 40px;
      background: #27ba9b;
      &.disabled {
        background: #cfcdcd;
      }
    }
  }
}
.url {
  display: flex;
  justify-content: space-between;
  padding-left: 120px;
  a {
    color: #999;
    margin-left: 10px;
  }
}
</style>
